Magnetic resonance imaging of the prostate at 1.5 versus 3.0 T: A prospective comparison study of image quality

Ullrich, T.; Quentin, Michael; Oelers, C.; Dietzel, Frederic; Sawicki, L; Arsov, Christian; Robert, René; Albers, Peter; Antoch, Gerald; Blondin, D.; Wittsack, Hans Jörg; Schimmöller, Lars

doi:10.1016/j.ejrad.2017.02.044

Cited by 82 publications

(48 citation statements)

References 25 publications

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“…In our study, the SNRs ranged from 13.509–20.374 using two measurements of different TEs (60–120 ms). Although the longer TE for DWI caused impairment of the SNR, the SNR in our study still reached a reasonably high level and was close to that of a previous study 23 . We used a 3.0 T MRI scanner, with 4 averages and a 5-mm slice thickness, which played positive roles in increasing SNR.…”

Section: Discussionsupporting

confidence: 91%

Effects of Echo Time on IVIM Quantification of the Normal Prostate

Min

Wang

et al. 2018

Sci Rep

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The two-compartment intravoxel incoherent motion (IVIM) theory assumes that the transverse relaxation time is the same in both compartments. However, blood and tissue have different T2 values, and echo time (TE) may thus have an effect on the quantitative parameters of IVIM. The purpose of this study was to investigate the effects of TE on IVIM-DWI-derived parameters of the prostate. In total, 17 healthy volunteers underwent two repeat examinations. IVIM-DWI data were scanned 6 times with variable TE values of 60, 70, 80, 90, 100, and 120 ms. The ADC of a mono-exponential model and the D, D*, and f parameters of the IVIM model were calculated separately for each TE. Repeat measures were assessed by calculating the coefficient of variation and Bland-Altman limits of agreement for each parameter. Spearman’s rho test was used to analyse relationships between IVIM indices and TE. Our results showed that TE had an effect on IVIM quantification, which should be kept constant in the examination protocol at each individual institution. Alternatively, an extended IVIM could be used to eliminate the effect of the TE value on the quantitative parameters of IVIM. This may be helpful for guiding clinical research, especially for longitudinal studies.

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Section: Discussionsupporting

confidence: 91%

Effects of Echo Time on IVIM Quantification of the Normal Prostate

Min

Wang

et al. 2018

Sci Rep

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“…This study revealed that comparable objective image quality is revealed by 1.5 T MRI in T2WI but is inferior to 3 T in DWI. The conclusions of the study indicated feasible diagnostic performance even in 1.5 T MRI [24]. However, the inferiority of 1.5 T MRI in DWI might lead to the misdiagnoses in this study.…”

Section: Discussionmentioning

confidence: 61%

Sensitivity of prostate cancer foci using 1.5 T multiparametric magnetic resonance imaging

Ito

Naito

Narisawa

et al. 2020

Preprint

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Background The detection of prostate cancer (CaP) has increasingly being carried out by multiparametric magnetic resonance imaging (mpMRI). Despite many previous studies, the sensitivity for clinically significant CaP (csCaP) was high, information on mpMRI false-negative lesions is limited. Therefore, the aim of this study was to evaluate the use and limitations of mpMRI in CaP. Methods A total of 228 CaP foci in 100 patients who underwent 1.5 T mpMRI and radical prostatectomy between December 2015 and June 2017 were retrospectively analyzed. The sensitivities of CaP foci, csCaP, and index tumors (ITs) were measured. Clinically significant CaP was defined into two categories based on the Gleason score (GS): csCaP/GS ≥ 3 + 4 (GS ≥ 3 + 4 or diameter > 10 mm) and csCaP/GS ≥ 4 + 3 (GS ≥ 4 + 3 or diameter > 10 mm). In addition, the characteristics of false-negative lesions were identified. The Prostate Imaging Reporting and Data System version 2 was used to determine an mpMRI positive lesion, defined as a lesion having a score of ≥ 3. Results The sensitivity of all legions, csCaP/GS ≥ 3 + 4, csCaP/GS ≥ 4 + 3, and ITs were 61.4%, 75.8%, 83.0%, and 91%, respectively. There were 91 lesions that were mpMRI false, 40% of which were csCaP/GS ≥ 3 + 4. There were three lesions with a GS of ≥ 8 and ≥ 10 mm in the false-negative results. Conclusions mpMRI can highly detect ITs and csCaP/GS ≥ 4 + 3; however, a few large and high-GS CaPs constitute undetectable lesions in 1.5 T mpMRI.

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“…For example, PROMIS used T1W, T2W, DWI, and dynamic gadolinium-enhanced imaging with a 1.5 Tesla scanner and pelvic phase array. Currently, 3 Tesla scanners are becoming more commonplace, and endorectal coils are now used to increase the signal-to-noise ratio and thus image quality; both demonstrate potential to increase sensitivity for the detection of prostate cancer 6 , 7 . One recent study that included these technologies has already demonstrated that MRI before biopsy and MRI-targeted biopsy is superior to TRUS-guided biopsy in biopsy-naïve men deemed at risk for prostate cancer 8 .…”

Section: Prostate Magnetic Resonance Imagingmentioning

confidence: 99%

Advances in prostate cancer imaging

Tangel

Rastinehad

2018

F1000Res

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Many exciting advances in medical imaging have been made in recent years that will alter the way we diagnose, stage, and treat patients with prostate cancer. Multiparametric magnetic resonance imaging (MRI) is emerging as the main modality for prostate cancer imaging. Contrast-enhanced ultrasound and shear wave elastography may be strong alternatives in patients who cannot undergo MRI. Prostate-specific membrane antigen-directed positron emission tomography/computed tomography has proven to be valuable in the primary staging of high-risk disease and for detecting disease in patients with biochemical recurrence. As more studies continue to emerge, it is becoming clear that the standard algorithm for diagnosing and staging prostate cancer will undergo significant changes in the near future.

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Magnetic resonance imaging of the prostate at 1.5 versus 3.0 T: A prospective comparison study of image quality

Cited by 82 publications

References 25 publications

Effects of Echo Time on IVIM Quantification of the Normal Prostate

Effects of Echo Time on IVIM Quantification of the Normal Prostate

Sensitivity of prostate cancer foci using 1.5 T multiparametric magnetic resonance imaging

Advances in prostate cancer imaging

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